Method of constructing concrete walls in deep trenches



May 17 1927. 1,628,682'.

y F. P. NOE ET AL METHOD OF GONSTRUCTING CONCRETE WALLS IN DEEP TRENCHES Filed Jan. 13. 1926 2 sheets-sheet i MEIMBZ. May 171927' F. P. Noa ET Al.,

METHOD OF CONSTRUCTING CONCRETE WALLS IN DEEP TRENGHES Filed Jan. 13. 1926 2 Sheets-Shea?,

Patented M.y 17, 1921.

UNITED STATES PATErsrr OFFICE.

FRANK?. NOEYAND SETH M. GOODER, OF CHICAGQAILLINOIB.

, Applicationv lcd January In some localities, great difiiculties are en countered in building concrete walls at a considerable depth as, for example, for subbasements, because the great amount of bracing necessary for the shoring at opposite sides of the trenches and the problemsinvolved in securing effective bracing without leaving defective walls when the same are oured.

T e object of the present inventionv is-to produce a simple, novel and comparatively inexpensive method of shoring the sides o'f such trenches by means. a portion of which will remain in the finished wall, without l5 causing structural weakness in the wall and Without leaving or permitting afterwards to be formed, openings through which leakage may occur.

The various :features of novelty whereby our invention is characterized will hereinafter be pointed out with particularity in the claims; but, for a full understanding of our invention and of its objects and advantages, reference may be had to the following detailed description taken in connection with 4the accompanying drawings, wherein:

Figure 1 is a vertical transverse section' through the bottom of a trench, after a wall has been poured therein, and before removal of such elements as are to be removed after the completionV of the wall; Fig. 2 is a vertical section through a portion of the trench and wall, on a larger scale than Fig. 1; Fig. 3 is a section taken approximately on line 3, 3 of Fig. 2; and Fig. 4 is a View similar to Fig. 3, showing the finished wall.

Referring to the first three figures of the drawings, A and B represent horizontal lagging placed at opposite sides of a. trench as the same is being dug; the trench being considerably wider than the thickness of the wall to beproduced. The lagging A constitutes the form for one side of the wall and. spaced apart therefrom a distance equal to the desired thickness of the wall, is a second vertical wall form C.

That may bev termed the trench linings, made up of the horizontal lagging at opposite sides of the trench, are held apart by numerous adjustable struts preferably arranged in vertical and horizontal rows from one end'of the trench to the other. Each strut is made of a comparatively thin steel pipe l, open at the ends, somewhat longer 13, ,1926. smalto. 80,905.

than the thickness of the wall to be produced, and having in'one end a head 2 that constitutesal nut throughwhich passes a jack screw 3. Un the jack screw, outwardly beyond the head, is an enlargement 4 conta-ininga hole 5 into which may be inserted a rod or. lever for turning the screw. Swiveled to the palt 4 is a foot 6. The steel 'pipes are preferably arranged in groups of two, three, or more, conveniently by setting them into the troughs of short metal channels `7, constituting walers adapted to extend vertically across the lagging or one side of the trench. In the arrangement shown, each channel has thin metal plates v8 in 4the form of discs secured within the trough to the web; the spacings between the centers of the discs being the same as the spacings between the jacks. The discs may convenient-ly be fastened to the channels by rivets 9. These discs fit into the adjacent ends of the jacks and prevent displacement of the jacks. The jack screws are made short as compared to the length .of the pipes, so that when the screws have entered the pipes as far as they will go, there will bc a considerable ree space between the ends of the screws and the ends of the pi s that are engaged with the channels. This free space is filled with concrete, as indicated at 1() in Fig. 3. Around each pipe is placed a block of wood 11, at such a point that the distance from its outer face to the outer face of the web of the channel is equal to the thickness of the wall to be produced. i

As the excavation of the trench pro resses, the lagging is placed in position and t 1e ver tical rows of struts are started, each row being formed by placing one short channel section directly below the overlying section, the feet at the opposite ends of the struts being engaged with walers l). arran ed vertically across the 4lagging B. screws are turned until they exert sufiicient pressure on the linings for the trench. After the inner wall form C has been set up. the space between it and the lagging A is filled with concrete, as indicatedat 14.

After the wall has set, the inner wall form 4 and the blocks 11 are removed, the removal of these blocks leaving cavities, one of which is indicated in dotted lines at 17 in Fi r. 4, around each pipe in the exposed face oi5 the wall. The pipes are then cut off within the recesses, namely inwardly of the plane of the exposed face of the wall. The spaces 1e jacky as wel pipe to which the head is fitted; thus interin the pipes, not already filled with concrete, as the recesses remaining upon the removal of the blocks, are filled with concrete, as shown in Fig. 4. After the wall,

has been finished, as just described, it consists of a'solid body offconerete containing thin steel pipes, completely surrounded by the concrete and completely lilled with concrete. vThe presence of the pipes does not im air the mechanical strength of the wall an does not cause, or ermit. later to betormed, vopenings throng 1 which water can pass.i It will be seen that, by means of our so that the machined parts of the jack may be lifted out of the pipes before thelatter are burnedoi. In thearrangement shown, each hea-d has on the' underside a lug 15 that enters a notch 16 in the -'outer end of the locking the head ,and body of the jack against relative rotation.

While we ,have illustrated and described with Aparti'cularity only a single preferred vform of our invention, we do not desire to be limited to the exact structural details thus illustrated and described; but intend to mesma cover all forms and arran ements which come within the definitions o our invention constituting the appended claims, even though such forms and arrangements do not include each and every novel feature of our invention.

Vile claim:

i 1. rl`he method of producing a wall in a trench, which consists in lagging the trench at the sides, setting walers across the lagging, placing between opposed walers screw jacks having body members in the form of thin-walled pipes, erecting a wall form in the trench to cooperate with the laggine' at one side to afford a space for the wall to be formed, pouring concrete into said space, and then cutting oti the portion of the pipes projecting from the wall after tl \e concret-e has set.

:2. The method ot' producing a wall in a trench, which consists in lagging the trench at opposite sides` placing across the trench `screw jacks having body members made of long thin )ipes lilled at one end with concrete and iaving jack screws at the other end, erecting;r in the trench a wall form form ing with the lagging adjacent to the filled ends of the pipes a space for the wall to be poured, pouring concrete into said space, rcmoving the wall form after the concrete has set, cutting ott the projecting ends of the pipes, and filling the free space within the pipes with concrete.

In testimony whereof, we sign this specitication.

FRANK P. NOE. SETH M. GOODER. 

